Thanks all! The "spark" for my question came from building survival kits with our Scouts. Matches, lighters, ferro rods, mag sticks, magnifying glasses, steele wool .... we teach them all and tell them to always try to carry at least 2 or 3 methods on them.(After thoroughly teaching them fire building skills first, of course, so they're ready for fire lighting.) We want to teach them the easiest, most reliable method first. Once we've covered the 2 or 3 components they carry in their kits, what would you move onto next?